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Mechanical Ring Parts Ceramic Seal Rings with Heat Resistant

Materials:Alumina (Al2O3)/ Zirconia(ZrO2) /Si3N4 /SiC ...etc

SizesCustom according to the drawings

Delivery times:2 -25 days(depends on the quantity)

Precision:Ra 0.1um tolerance: 0.001mm... etc

Features:Heat resistance / Wear resistance / High purity / Refractory / High Corrosion / Good Insulation

Customized:Can be custom for special sizes and shapes


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Ceramic plates sheet substrate disc series
Mechanical Ring Parts Ceramic Seal Rings with Heat Resistant

High resistance ceramic sealing ring by high technology advanced ceramics and refractory temperature: 1750 ℃.High temperature ceramic seal ring are made of the corresponding ceramics (normal type, high purity type, high aluminum type, zirconium type) as raw materials through isostatic pressure, precision processing, sintering and other processes.

High resistance ceramic seal ring is widely used in heat insulation gasket;Kiln masonry lining and expansion joint sealing;High temperature pipe heat insulation;Non-ferrous metal melting groove, groove pad;Observation hole of industrial kiln;Kiln door brick and burner brick;Insulation gaskets for electrical equipment connection;High temperature filtration material;It can replace asbestos products.

C

haracteristics:

low thermal conductivity, low thermal capacity, excellent chemical stability, excellent non-flammability, excellent thermal stability, excellent thermal shock resistance, excellent sound absorption.

Thickness tolerance:

Thickness tolerance of precision gasket: 0.001-0.003 (no tolerance);0.005(±0.001) 0.01-0.03(±0.002)

0.04-0.06(±0.003) 0.07-0.12(±0.004) 0.15-0.18(±0.005) 0.20-0.22(±0.006)

0.25-0.30(±0.007) 0.35(±0.008) 0.40-0.45(±0.009) 0.50-0.60(±0.010)

0.70(±0.012) 0.80-1.00(±0.013) 1.50-2.00(±0.025) 2.50-3.00(±0.035)

Ceramic material composition:

· 95%--99.99% Alumina (Al2O3)  

· Silicon Carbide  

· Silicon Nitride

· TTZ: Magnesia partially stabilized Zirconia (ZrO2)

· YTZP: Yttria partially stabilized Zirconia (ZrO2)

· ZDY: Yttria fully stabilized Zirconia (ZrO2)

Shape :Round , square etc

Available color :black , white , yellowish etc

PropertiesUnitsAL2O3ZrO2SiCSi3N4
Densityg/cm³3.65-3.935.95-6.03.123.23
Water absorption00000
Coefficientof thermal expansion10-16/k7.9-8.510.533.2
Modulus of elasticity young`s modGPa280-340210440300
Poission`s ratio/0.21-0.220.30.170.26
HV hardness hvMPa16501300-136528001500
Flexural strengthMPa310950390720
Flexural strength(700℃)MPa230210380450
Compressive strengthMPa2200200018002300
Fracture toughnessMPa*m1/24.2103.96.2
Heat conductivityW/m*k26-302-2.212025
Electrical resistivityΩ*mm2/m>1016>1015>103>1013
Max use temperature1750105015501050
Resistance to acid alkaline/highhighhighhigh
Dielectric constant/9.6299.66-10.03/
Dielectric strengthKV/mm8.79//
Thermal shock resistance△T(℃)180-220280-350230-260/
Tensile strengthMPa248250//

Precision of manufacture:

Dimensional accuracy: Up to 0.001mm

Smoothness: Highest possible mirror

Concentricity: Up to 0.003mm

Parallelism: Up to 0.002mm

The inner hole tolerance: The minimum  0.005mm

Straight flute: The narrowest 0.1x100mm

The thickness of the size: Minimum to 0.02mm

The screw thread: Minimum internal thread M2

Cylindricity: Up to 0.004mm

The linear tolerance: Up to 0.001mm

The smallest aperture: The minimum 0.07mm

Precision process: CNC maching,grinding,lapping

Surface finish: Glazed,polishing or metallized

Visual quality:

1. No cracks,  no dark dots, no contamination and sharp edges;

2. Evenly distributed glaze with very smooth surfaces

Company Introduction

Mingrui ceramic manufacture and provides alumina ceramic components for a wide range of application like Mechanical Equipment, Electronic & Electrical, Oil Drilling, Medical, Chemical Industry etc. According to actual application and customer's requirement, the purities vary from 95%-99.7% and the forming methods will be different. The forming methods applied in our plant include dry pressing, isostatic pressing, injection moulding, extrusion moulding. With experienced engineers and talented workers, we are confident to offer high quality, high precision, complex components for customers worldwide.

General Characteristics of Materials:
CharacteristicCeramicsMetalsPolymersRefractory
DensityLow to HighLow to HighLowLow to Medium
HardnessHighMediumlowMedium
ToughnesslowHighMediumlow
Wear ResistanceHighMediumlowMedium
Tensile StrengthLow to Medium                                         Highlowlow
Compressive StrengthHighMedium to Highlow to MediumHigh
Young’s ModulusMedium to HighLow to HighLowMedium
Dimensional StabilityHighlow to Mediumlow/
Thermal ExpansionLow to MediumMedium to HighHighlow
ThermalConductivityMediumMedium to HighLowMedium
Thermal ShockLowMedium to HighHighlow to Medium
Electrical ResistanceHighlowHigh/
Chemical ResistanceHighlow to MediumMedium/
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